Tradies Entrance 

1/ When a Tradie tradesperson enters their suppliers store, they generally enter through the warehouse entrance as opposed to the main (showroom) entry.

2/ The sexual innuendo of this saying, can be referred to entering a girl through the back door ass as opposed to the front entrance showroom

Bill-- Did you use the tradies entrance?

Rob -- Nah mate, did that with my ex and she didn't shit right for a week.

Tradies Entrance by Mitch-90 July 22, 2012

Trades Man's Entrance 

Trades Mans Entrance, The Back Pussy, The Poop Bridge, The Bourneville Blvd, The Bakerloo, Cannock Chase, The Bottom, Arse, Ass, The Rusty Sheriff's Badge, The Brown Starfish, The Gary Glitter, The Hershey Highway, The Backdoor, The Brown Eye, The Fuzzy Snuggle, The Rear Admiral's Daughter.... The Glory Hole

Father O'Malley lounged dreamily on his chez long, thumbing his holy book, recounting to himself a lost weekend with Italian sailors on shore leave;
"Luigi rattled my head board like no altar boy could. By Monday morning my Trades Man's Entrance flapped like a wind sock in a force seven gale".
A life in Holy Service. Father Seamus O' Malley. Penguin Books. 1932.

Trades Man's Entrance by Da Dirty South April 12, 2008